The limitations of measuring pH by colour indicators: M34-20/117E-PDF

“Aqueous solutions containing various amounts of NaC1 and FeC12, were prepared and their pH's estimated using pH-indicators in three forms: indicator-impregnated filter paper, indicator-coated silica gel particles, and aqueous solutions of the indicators. It was found that silica gel was an unsuitable medium for carrying the indicator because of its own acidic nature, and that the proportion of indicator to test solution can influence the accuracy of the pH estimation. It was also found that the success of the indicator-paper method depends on the concentration of the indicating solution used in the preparation of the paper, and on the concentration of dissolved salts in the test solution"--Abstract, p. i.

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Department/Agency Natural Resources Canada. Mines Branch.
Title The limitations of measuring pH by colour indicators
Series Title Technical bulletin ;
Publication Type Series - View Master Record
Language [English]
Format Electronic
Electronic Document

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Note Cover title. "November 1969." Digitized edition from print [produced by Natural Resources Canada].
Date 1970.
Number of Pages v, 14 p.
Catalogue Number
  • M34-20/117E-PDF
Departmental Catalogue Number 300003
Subject Terms Steel, Chemistry